CN107964849A - A kind of roadbed conditioned soil mixer with continuous hack with the effect that continuously stirs - Google Patents

A kind of roadbed conditioned soil mixer with continuous hack with the effect that continuously stirs Download PDF

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Publication number
CN107964849A
CN107964849A CN201711425105.1A CN201711425105A CN107964849A CN 107964849 A CN107964849 A CN 107964849A CN 201711425105 A CN201711425105 A CN 201711425105A CN 107964849 A CN107964849 A CN 107964849A
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CN
China
Prior art keywords
stirring
soil
crushing
shaft
continuous
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CN201711425105.1A
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Chinese (zh)
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CN107964849B (en
Inventor
赵利军
庄智强
肖铁链
刘珊珊
张增强
李雪鹏
卢国文
侯劲汝
董武
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Changan University
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Changan University
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Publication of CN107964849A publication Critical patent/CN107964849A/en
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Publication of CN107964849B publication Critical patent/CN107964849B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/07Stirrers characterised by their mounting on the shaft
    • B01F27/074Stirrers characterised by their mounting on the shaft having two or more mixing elements being concentrically mounted on the same shaft
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/09Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/092Stirrers characterised by the mounting of the stirrers with respect to the receptacle occupying substantially the whole interior space of the receptacle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/11Stirrers characterised by the configuration of the stirrers
    • B01F27/112Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/11Stirrers characterised by the configuration of the stirrers
    • B01F27/19Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/23Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
    • B01F27/232Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
    • B01F27/2322Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes with parallel axes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/05Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Disintegrating Or Milling (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The invention discloses a kind of roadbed conditioned soil mixer with continuous hack with the effect that continuously stirs, including soil crushing device and conditioned soil agitating device etc..Soil crushing device is both secured in rack with conditioned soil agitating device.Soil crushing device is located at the top of conditioned soil agitating device, and metering transmission device hangs on the lower section of soil crushing device discharge port I by gravity sensor.Soil crushing device is provided with feeding mouth I, and hack chamber is located at the lower section of feeding mouth I, and bar grizzl(e)y is located at the lower section of hack chamber, and metering transmission device is fixed on hack chamber enclosure by gravity sensor suspension.Feeding mouth II of the conveyer belt one end close to conditioned soil agitating device is measured, one end is equipped with feeding mouth II above stir chamber, the stirring chamber enclosure setting atomizer above stir chamber;Double agitating shafts are equipped with stir chamber, mixing arm is set on agitating shaft, mixing arm is equipped with agitating vane, and the stirring chamber enclosure other end is equipped with discharge port II.The configuration of the present invention is simple, improves construction efficiency and quality on the whole.

Description

Roadbed improved soil stirring machine with continuous soil crushing and continuous stirring functions
Technical Field
The invention belongs to the technical field of roadbed improved soil mixers, and particularly relates to a roadbed improved soil mixer with continuous soil crushing and continuous stirring functions.
Background
At present, an independent soil crusher and an independent stirrer are widely used in the field of road and railway engineering and are respectively used for crushing and plant mixing operation of roadbed improved soil. The working process mainly comprises the steps of crushing soil through a soil crusher, removing large granular substances such as stones and other impurities in the soil, and storing the soil crushed into a certain particle size specification in a centralized manner to serve as a raw material for subsequent plant mixing. In plant mixing, firstly, the crushed soil needs to be transported to a hopper of a mixer through a loader, then is fed, conveyed, weighed and finally put into a mixing cylinder of the mixer to be mixed with water, cement or lime and other stable materials, and therefore the improved soil which is uniform and meets the quality requirement is produced. According to traditional work flow, the soil after the hack machine is broken needs to be concentrated and stored, and this not only occupies great storage area, and the long still needs to protect and cover broken soil of storage time moreover to prevent that the hack from increasing the water content and agglomerating into pieces under the action of gravity owing to absorb water, thereby influence subsequent stirring quality and efficiency. Although the method of crushing while mixing can be adopted during construction, the problems of water absorption and agglomeration can be reduced to a certain extent, but because the piled crushed soil needs to be transported to mixing equipment by a loader, the production rate of mixing is severely limited, and the bottleneck of improving the soil mixing efficiency is formed.
The existing soil improvement pulverizer mostly adopts a crushing mechanism, and realizes the crushing of soil through a single or a plurality of rotary rollers, but in the actual use, because the thrown soil material has large viscosity and contains a plurality of foreign matters, on one hand, the soil improvement pulverizer is easy to arch at a feeding port, and the normal operation of pulverizing soil is influenced; on the other hand, large-particle-size stones contained in the soil are not easy to discharge, so that the power consumption is large, and the service life of the wearing parts is short. In addition, the tool bit form of hack machine is single, and soil can produce great resistance to the tool bit in the course of the work to influence work efficiency, also can produce adverse effect to the life-span of motor. The existing improved soil plant mixing equipment mostly adopts plant mixing equipment for stabilizing soil, and stirring operation is carried out through a continuous double-horizontal-shaft stirrer. However, the roadbed modified soil is different from a stabilized soil material, the content of fine materials is high, the viscosity is high, and lumps are easily formed in the stirring process. The existing stirrer is difficult to stir uniformly due to insufficient shearing action of blades, soil is easily adhered to a stirring shaft, stirring quality and efficiency are affected, and stirring power consumption is high.
Disclosure of Invention
In order to solve the problems, the invention provides a roadbed improved soil mixer with continuous soil crushing and continuous stirring functions, which adopts a machine structure and a construction method integrating soil crushing and stirring, improves the construction efficiency and quality on the whole, has small resistance of a streamline soil crushing device, and has simple structure of three-axis arch breaking and centrifugal force stone removal and high efficiency; the stirring device is additionally provided with the shear plane of the stirring blades and the special arrangement of the shear plane, agglomerated particles in soil are damaged, and the cleanness of the stirring shaft is ensured, so that the stirring quality and efficiency are improved, and the power consumption is reduced.
The invention adopts the following technical scheme to solve the problem:
a roadbed improved soil mixer with continuous soil crushing and continuous stirring functions comprises a rack, a metering and conveying device, a soil crushing device and an improved soil stirring device, wherein the soil crushing device and the improved soil stirring device are arranged on the rack; wherein,
the soil crushing device comprises a driving motor I, a bar screen, a feeding port I, a soil crushing cavity and a discharging port I which are integrally formed and sequentially arranged from top to bottom, wherein an arch breaking shaft is horizontally arranged in the feeding port I, two ends of the arch breaking shaft are movably connected with the side wall of the feeding port I, one end of the arch breaking shaft extends out of the feeding port I and is provided with a large chain wheel, a plurality of arch breaking blades are uniformly arranged in the circumferential direction of the arch breaking shaft, a soil crushing shaft is horizontally arranged in the soil crushing cavity, two ends of the soil crushing shaft are movably connected with a soil crushing cavity shell, one end of the soil crushing shaft extends out of the soil crushing cavity and is provided with a small chain wheel, a plurality of soil crushing cutter head assemblies are uniformly arranged in the circumferential direction of the soil crushing shaft, the driving motor I is used for driving; a stone discharge port is formed in the shell of the soil crushing cavity, and the bar screen is arranged between the soil crushing cavity and the discharge port I;
the metering and conveying device comprises a gravity sensor suspended below a discharge port I of the soil crushing device, a metering conveyer belt arranged below the discharge port I of the soil crushing device and a driving motor II for driving the metering conveyer belt;
the native agitating unit of improvement sets up the ejection of compact department at the measurement conveyer belt, pan feeding mouth II that sets gradually including power drive arrangement and integrated shaping and top-down, stirring chamber and discharge gate II, the stirring intracavity level is provided with the (mixing) shaft, the both ends and the stirring chamber shell swing joint of (mixing) shaft, and one end stretch out to the stirring chamber outside and be connected with power drive arrangement, the epaxial circumference of stirring evenly is provided with a plurality of stirring arm, all be provided with stirring vane on the end of every stirring arm, the top in stirring chamber is provided with the inlet tube, be provided with a plurality of atomizer on the inlet tube.
The invention has the further improvement that the number of the arch breaking shafts is three, the end surfaces of the arch breaking shafts are arranged in an inverted triangle, and a plurality of arch breaking blades are uniformly arranged on the circumference of each arch breaking shaft.
The invention is further improved in that the soil crushing cutter head component comprises a gear drum sleeved on the soil crushing shaft, a cutter holder arranged on the gear drum and a cutter head fixed on the cutter holder.
The invention is further improved in that the cutter head is fixed on the cutter seat through a cutter head tail round rod, a spring gasket and a nut.
A further improvement of the invention is that the axis of the tool bit passes through the tip and the angle of the tangent to the circumference of the tool when the tool tip is rotated α is in the range of 45 to 60 degrees.
The invention has the further improvement that the discharge port II and the feeding port II are arranged in a diagonal manner, and a discharge door is also arranged at the discharge port II.
The invention is further improved in that the power driving device comprises a driving motor III, and the output end of the driving motor III is connected with the extending end of the stirring shaft through a speed changer.
The invention has the further improvement that the number of the stirring shafts is two, the stirring shafts are arranged in parallel, and the extending ends of the two stirring shafts are connected with a speed changer through a synchronous gear.
Further aspects of the inventionThe improvement lies in that the diameter of (mixing) shaft is D, and the diameter of stirring arm is D, and the relation between the two is:
the arrangement mode of the stirring arms on the stirring shaft is as follows: on the same stirring shaft, the stirring arms oppositely arranged in each group are 180 degrees along the circumferential direction, the stirring arms oppositely arranged in the adjacent groups and the stirring arms oppositely arranged in the previous group are 90 degrees and are sequentially arranged; in the same rotating plane on the two stirring shafts, every two groups of stirring arms which are oppositely arranged form an angle of 90 degrees in the rotating plane; on same (mixing) shaft, along axial direction, the distance between the stirring arm of every two sets of adjacent installation directions is l, and stirring vane's width is B, and its relation between the two is:
the invention has the further improvement that the tail end of the stirring arm is provided with a concave part of the stirring arm, and the stirring blade is provided with a cut surface; and has, the height h of the stirring blades1Height h from the stirring arm2The relationship between them is:
h=h1+h2
the angle formed by the vertical surface of the concave part of the stirring arm and the central line of the stirring shaft is 45 degrees, namely the cut surface of the stirring blade and the central line of the stirring shaft form 45 degrees;
the stirring blade is of a three-claw structure;
the relationship between the width B of the stirring blade and the width B of the cut-away portion is:
the distance s between the stirring arm and the stirring blade after assembly is as follows:
compared with the prior art, the invention has the following advantages:
according to the invention, the soil crushing and stirring integrated machine structure and the construction method are adopted, the soil crushing device directly conveys the crushed soil to the stirring device of the same machine for stirring by the metering and conveying device of the same machine, so that the storage and unnecessary occupied area of the crushed soil are avoided, the construction efficiency is improved, the manpower and material resources are saved, the problems of water absorption and agglomeration of the crushed soil in the processes of piling up and transferring the crushed soil are avoided, and the subsequent improved soil stirring quality is ensured.
The stirring blades of the stirring device adopt a three-claw structure, and the number of the side edges of the blades is increased, so that the shearing action surface of the stirring blades and the improved soil particles is increased, agglomerated particles in soil are damaged, and the full separation and uniform mixing of material particles in the stirring process are facilitated.
According to the stirring device, the stirring shafts and the stirring arms are smooth cylindrical surfaces, and the stirring blades on each stirring shaft are far away from the stirring shaft arranged on the stirring shaft, so that the material resistance near the stirring shaft is small, and the problem of material sticking of the stirring shaft caused by the speed gradient during stirring is favorably reduced; meanwhile, the stirring blade on each stirring shaft is close to the other stirring shaft to the greatest extent when rotating to a position between the two stirring shafts, so that soil adhered to the other stirring shaft can be pulled off, the cleanness of the stirring shafts is kept, the stirring quality and efficiency are ensured, and the power consumption is reduced.
In the stirring device, the plurality of atomizing nozzles are uniformly distributed on the stirring cavity shell above the stirring cavity, so that a small amount of water is uniformly sprayed to a single point in the stirring cavity in the process of stirring the improved soil, the water inflow is convenient to control, the problems of soil particle water absorption and agglomeration caused by uneven water supply in the stirring cavity are avoided, and the stirring uniformity of the improved soil is improved.
According to the invention, the overall appearance of the soil breaking device after the cutter head and the cutter holder are assembled is streamline, so that the resistance of soil to the cutter head is reduced, and the adhesion of the soil on the cutter holder is reduced. The arch breaking and stone removing structure is simple and efficient. The three arch breaking shafts are utilized to prevent the fed falling soil from arching at the outlet of the storage bin to influence the construction efficiency; the crushing shaft rotates at a high speed, and different centrifugal forces are formed by different material particles due to different particle sizes and different masses during crushing, so that large stones and impurities with large particle sizes in the crushing cavity are automatically discharged through the stone discharging port.
Drawings
FIG. 1 is a schematic view showing the overall construction of a roadbed-improved soil mixer with continuous soil crushing and continuous stirring functions according to the present invention;
FIG. 2 is a plan view of a roadbed-improved soil mixer with continuous soil crushing and continuous stirring functions;
FIG. 3 is a full sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view of the overall structure of the stirring shaft and its stirring blades in FIG. 1;
FIG. 5 is a schematic view of the mixing blade angle and blade width of FIG. 4;
FIG. 6 is a distribution diagram of the atomization nozzle in FIG. 3 along the axial direction of the stirring shaft;
FIG. 7 is a schematic view of the crushing head and the tool holder of FIG. 1;
fig. 8 is a chain drive schematic of the shredder of fig. 2.
In the figure: 1-a frame; 2-a soil breaking device; 2.1-feeding port I; 2.1.1-arch-breaking leaf blade; 2.1.2-breaking arch shaft; 2.1.3-large sprocket; 2.2-chain; 2.3-soil crushing cavity shell; 2.3.1-stone outlet; 2.4-soil crushing cavity; 2.4.1-small sprocket; 2.4.2-soil crushing shaft; 2.4.3-tooth drum; 2.4.4-tool apron; 2.4.5-tool bit; 2.4.5.1-cutter head tail round bar; 2.4.6-nut; 2.4.7-spring washer; 2.5-driving motor I; 2.6-bar screen; 2.7-discharge port I;
3-a metering and conveying device; 3.1-metering conveyer belt; 3.2-gravity sensor; 3.3-driving motor II;
4-improved soil stirring device; 4.1-drive motor III; 4.2-transmission; 4.3-synchronizing gear; 4.4-stirring chamber housing; 4.5-feeding port II; 4.6-atomizing spray head; 4.7-discharge port II; 4.8-discharge gate; 4.9-stirring chamber; 4.9.1-stirring shaft; 4.9.2-stirring arm; 4.9.2.1-stirring arm recess; 4.9.3-stirring blade; 4.9.3.1-cut surface; 4.9.3.2-stirring blade side wall; 4.10-water inlet pipe.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 8, the roadbed modified soil mixer with continuous soil crushing and continuous stirring functions provided by the invention comprises a frame 1, a soil crushing device 2, a metering and conveying device 3 and a modified soil stirring device 4. The soil crushing device 2 and the improved soil stirring device 4 are both fixed on the frame 1. The soil crushing device 2 is positioned above the improved soil stirring device 4, and the metering and conveying device 3 is suspended below a discharge port I2.7 of the soil crushing device through a gravity sensor 3.2. The soil crushing device 2 is provided with a feed inlet I2.1, be provided with broken arch shaft 2.1.2 in the feed inlet I2.1, garrulous soil chamber 2.4 is located the below of feed inlet I2.1, be provided with tooth drum 2.4.3 in the garrulous soil chamber 2.4, blade holder 2.4.4 is fixed in on the tooth drum 2.4.3, tool bit 2.4.5 is fixed in on the blade holder 2.4.4, a garrulous soil chamber 2.4 lateral wall sets up row's stone mouth 2.3.1, bar screen 2.6 is located the below in garrulous soil chamber 2.4, measurement conveyer 3 hangs through gravity sensor 3.2 and is fixed in on garrulous soil chamber shell 2.3. One end part of the metering conveyor belt 3.1 is close to a material inlet II4.5 of the improved soil stirring device, a stirring cavity shell 4.4 of the improved soil stirring device 4 is fixed on the rack 1, one end above a stirring cavity 4.9 is provided with the material inlet II4.5, and the stirring cavity shell 4.4 above the stirring cavity is provided with an atomizing nozzle 4.6; be equipped with two (mixing) shaft 4.9.1 in the stirring chamber 4.9, set up stirring arm 4.9.2 on the (mixing) shaft 4.9.1, be equipped with stirring vane 4.9.3 on the stirring arm, the stirring chamber shell 4.4 other end is equipped with discharge gate II4.7, improved soil agitating unit's driving motor III4.1, derailleur 4.2 all are fixed in on the frame 1.
The driving motor I2.5 in the soil crushing device 2 is directly connected with the soil crushing shaft 2.4.2, so that the gear drum 2.4.3 rotates to obtain higher rotating speed; a small chain wheel 2.4.1 is arranged on the soil crushing shaft 2.4.2, and three large chain wheels 2.1.3 are respectively arranged at one ends of the three arch crushing shafts 2.1.2; the soil crushing shaft 2.4.2 drives the small chain wheel 2.4.1 to rotate so as to drive the three large chain wheels 2.1.3 to rotate through chain transmission, so that the arch breaking shaft 2.1.2 is driven to rotate; when soil is put into the feeding port I2.1 of the soil crushing device 2, the arch breaking shaft 2.1.2 drives the arch breaking blades 2.1.1 to rotate, so that the soil is primarily dispersed, and large soil blocks in the soil are crushed, so that the feeding port I2.1 uniformly supplies the material to the soil crushing cavity 2.4, and the feeding material is prevented from being clamped at the feeding port I2.1; the broken arch shaft 2.1.2 is driven to rotate by the large chain wheel 2.1.3, and the rotating speed of the large chain wheel 2.1.3 is low, so that the broken arch shaft 2.1.2 is ensured to have lower rotating speed. Because the lower ends of the side walls of the feeding ports I2.1 are all installed in an inward inclined manner, the movement space of the soil is gradually reduced from top to bottom and is accumulated in a smaller crushing area in the soil crushing cavity 2.4; the driving motor I2.5 drives the soil crushing shaft 2.4.2 to rotate, so that the gear drum 2.4.3 rotates at a high speed, the gear drum 2.4.3 rotates to drive the cutter head 2.4.5 to rotate, the cutter head 2.4.5 rotates to cut and flap soil in the soil crushing cavity 2.4 at a high speed, and the cutter head 2.4.5 and the bar screen 2.6 are further crushed through extrusion and pulling grinding. The distance between the bar screens 2.6 is determined by the diameter of finished product material particles required by the specification, and soil particles meeting the specification are discharged from a discharge port I2.7 of the device through the bar screens 2.6 and fall onto a metering conveyer belt 3.1. Materials such as a small amount of unqualified soil with particles and hard stones difficult to break continue to move under the drive of the cutter head, the centrifugal force of the materials moving at high speed is different due to different densities, when the materials reach the stone discharge port 2.3.1, the stones which are hard and have high densities are discharged from the stone discharge port due to the larger centrifugal forceDischarging from a port 2.3.1; the stone outlet 2.3.1 is arranged at the concrete position of the stirring cavity: viewed in the direction C, on the right-hand side in the counterclockwise direction of rotation of the drive motor I2.5. Tool bit 2.4.5 is fixed in on blade holder 2.4.4, and the arrangement of blade holder 2.4.4 on tooth drum 2.4.3 is the helix arrangement in opposite directions of both ends symmetry, and in tooth drum 2.4.3 rotation work in-process, this kind of arrangement can drive the soil in garrulous soil chamber and draw close to in the middle of the garrulous soil chamber by garrulous soil chamber 2.4 both ends to the soil after being convenient for breakage spills from discharge gate I2.7 after 2.6 screens of bar screen. The tool bit 2.4.5 and the tool apron 2.4 are connected in a threaded manner, namely, an external thread is processed on the round rod 2.4.5.1 at the tail part of the tool bit, and an internal thread is processed on the inner hole of the corresponding tool apron 2.4.4, so that the tool bit 2.4.5 and the tool apron are in fit connection; length m of the tail round bar 2.4.5.1 of the cutter head of the invention1Is larger than the width m of the tool apron 2.4.42The integral appearance of the tool bit 2.4.5 and the tool apron 2.4.4 after being assembled is streamline, so that the resistance of soil to the tool bit 2.4.5 is reduced, the adhesion to the soil is reduced to a certain degree, the soil crushing efficiency is improved, and the service life of the motor is prolonged.
The metering and conveying device is suspended on the soil crushing cavity shell 2.3 through a gravity sensor 3.2, a metering conveying belt 3.1 is positioned below a discharge port I2.7 of the soil crushing device, the crushed soil is sieved by a bar sieve 2.6 by the soil crushing device and falls onto the metering conveying belt 3.1 through the discharge port I2.7, and the crushed soil is sensed and weighed through the gravity sensor 3.2; a driving motor II3.3 of the metering and conveying device is positioned at the front section which rotates clockwise along the metering and conveying belt 3.1, so that the tensioning of the metering and conveying belt 3.1 is facilitated; when the mass of the soil on the metering conveyer belt 3.1 reaches the required mass, the driving motor II3.3 operates to drive the metering conveyer belt 3.1 to rotate, so that the soil on the metering conveyer belt 9 is conveyed to the material inlet II4.5 of the improved soil stirring device, the soil after being crushed slides down to the stirring cavity 4.9 along the material inlet II4.5 of the improved soil stirring device along with the continuous rotation of the metering conveyer belt 3.1.
A driving motor III4.1 of the improved soil stirring device is fixed on a rack 1, the driving motor III4.1 is connected with a transmission 4.2, the motor drives the transmission to work, a pair of synchronous gears 4.3 are connected behind the transmission 4.2, and the transmission 4.2 works to drive the gears to rotate. The invention requires the transmission to drive the two straight gears to rotate oppositely, namely the rotation direction of the synchronous gear 4.3 rotates inwards at the same time; in the invention, the two gears are the same pair of gears, namely the transmission ratio of the pair of gears is 1, so that the rotating speeds of the two stirring shafts 4.9.1 are the same, and the rotating directions are opposite, namely the rotating directions of the two stirring shafts 4.9.1 rotate inwards at the same time. Two (mixing) shafts 4.9.1 all are located stirring chamber 4.9, and the fixed a plurality of circular stirring arm 4.9.2 of installation on (mixing) shaft 4.9.1, the diameter of (mixing) shaft 4.9.1 is D, and the diameter of stirring arm 4.9.2 is D, and the relation between the two is:the arrangement of the stirring arms 4.9.2 on the stirring shaft 4.9.1 is as follows: on the same stirring shaft, the stirring arms oppositely arranged in each group are 180 degrees along the circumferential direction, the stirring arms oppositely arranged in the adjacent groups and the stirring arms oppositely arranged in the previous group are 90 degrees and are sequentially arranged; in the same rotating plane on the two stirring shafts, every two groups of stirring arms which are oppositely arranged form an angle of 90 degrees in the rotating plane; on the same stirring shaft 4.9.1, in the axial direction, the distance between every two adjacent sets of the stirring arms 4.9.2 in the installation direction is l, the width of the stirring blade 4.9.3 is B, and the relationship between the two is:
so that the stirring vanes 4.9.3 contact all the improved soil in the stirring cavity 4.9 as much as possible, so as to stir the improved soil in the stirring cavity fully. The end of the stirring arm where the stirring blade 4.9.3 is installed is formed into a concave shape so as to facilitate installation of the stirring blade 4.9.3; height h of the stirring vane 4.9.31Height h from the stirring arm2The relationship between them is:
h=h1+h2
the ends of the stirring arms 4.9.2 are recessed to form stirring arm recesses 4.9.2.1. The angle formed by the vertical plane of the concave 4.9.2.1 of the stirring arm and the center line of the stirring shaft 4.9.1 is 45 degrees, that is, the cut-off plane 4.9.3.1 of the stirring blade 4.9.3 and the center line of the stirring shaft 4.9.1 are 45 degrees, so that the stirring blade 4.9.3 is easily inserted into the improved soil during the stirring process of the improved soil, the resistance of the improved soil to the cutting of the stirring blade 4.9.3 is reduced, and in the stirring process, the stirring blade 4.9.3 can push the improved soil to the direction of the discharge port II4.7 in combination with the arrangement mode of the stirring arms 4.9.2 and the rotating directions of the two stirring shafts 4.9.1, so that the stirred improved soil can be conveniently discharged from the discharge port II 4.7. The mixing blade 4.9.3 mounted on the mixing arm 4.9.2 is bolted to facilitate replacement of the mixing blade 4.9.3. According to the invention, the stirring blade 4.9.3 is processed into a three-claw structure, namely two parts are cut off from the stirring blade to form the three-claw structure, and the cutting angle is needed when the cutting is carried out, so that the cutting direction and the cut surface form 45 degrees, and the cut stirring blade side wall 4.9.3.2 forms a certain inclination angle which is 45 degrees, so that the shearing area of the stirring blade 4.9.3 and the improved soil is increased and the stirring force to the improved soil is increased in the working process of stirring the improved soil; the relationship between the width B of the stirring blade and the width B of the cut-away portion in the present invention is:
meanwhile, a single stirring blade has four inclined shearing surfaces, so that the shearing area of the improved soil is enlarged, the improved soil is stirred more fully and uniformly, and the stirring efficiency is improved. The distance between the stirring arm 4.9.2 and the stirring blade 4.9.3 after assembly is close to the distance s in the invention, which is as follows:
therefore, in the working process of stirring the improved soil, the rotating stirring blades can pull the improved soil adhered to the stirring shaft down to keep the stirring shaft clean. A discharge port II4.7 is arranged at one end (far away from the feeding port end) of the shell of the stirring cavity, and a discharge door 4.8 is arranged, so that the improved soil in the stirring cavity 4.9 can be discharged conveniently. A plurality of atomizer 4.6 are evenly arranged to the stirring chamber shell 4.4 of stirring chamber 4.9 top, and its main function is for carrying out the in-process that improves soil stirring and evenly spraying water to the stirring intracavity to be convenient for control the inflow, avoided the inhomogeneous soil grain caking problem that leads to of water supply in the stirring intracavity, improved improvement soil stirring homogeneity, improved improvement soil stirring quality. The arrangement mode of the atomizer 4.6 in the stirring cavity shell 4.4 is as follows: the width of the shell of the stirring cavity is T, and the atomizer nozzles 4.6 are evenly distributed along the width direction, namely the distance between two adjacent atomizer nozzles isThe distance between the atomizer 4.6 and the edge of the stirring cavity isThe working length L for each atomizer 4.6 to be charged is: the distance between every two adjacent stirring blades 4.9.3, namely the distance between two adjacent atomizing nozzles 4.6, along the axial direction of the same stirring shaft 4.9.1 is L.
During working, soil is crushed by the soil crushing device 2, and soil particles meeting the requirements of the bar screen 2.6 fall onto the metering conveyer belt 3.1 of the metering conveyer device 3 through the discharge port I2.7 for weighing; when the required soil quality is achieved, the metering conveyer belt rotates, the crushed soil is conveyed to the material inlet II4.5, and the soil slides down to the stirring cavity 4.9 through the material inlet II4.5 along with the continuous rotation of the metering conveyer belt 3.1; at this moment, the stirring device 4 works, the stirring shafts 4.9.1 rotate, the stirring blades 4.9.3 improve and stir the soil, and because the two stirring shafts 4.9.1 simultaneously rotate towards the inner side, the installation direction of the stirring blades 4.9.3 is a certain inclination angle, so that in the stirring process, the stirring blades have the trend of pushing the improved soil to the discharge port II4.7 direction, and the improved soil after the stirring is completed is discharged from the discharge port II 4.7.

Claims (10)

1. A roadbed improved soil mixer with continuous soil crushing and continuous stirring functions is characterized by comprising a rack (1), a metering and conveying device (3), a soil crushing device (2) and an improved soil stirring device (4) which are arranged on the rack (1), wherein the soil crushing device (2) is positioned above the improved soil stirring device (4); wherein,
the soil crushing device (2) comprises a driving motor I (2.5), a bar screen (2.6) and an integrally formed feeding port I (2.1), a soil crushing cavity (2.4) and a discharging port I (2.7) which are sequentially arranged from top to bottom, a crushing arch shaft (2.1.2) is horizontally arranged in the feeding port I (2.1), two ends of the crushing arch shaft (2.1.2) are movably connected with the side wall of the feeding port I (2.1), one end of the crushing arch shaft extends out of the feeding port I (2.1) and is provided with a large chain wheel (2.1.3), a plurality of crushing arch blades (2.1.1) are uniformly arranged in the circumferential direction of the crushing arch shaft (2.1.2), a soil crushing shaft (2.4.2) is horizontally arranged in the soil crushing cavity (2.4), two ends of the soil crushing shaft (2.4.2) are movably connected with a soil crushing cavity shell (2.3), one end of the crushing shaft extends out of the soil crushing cavity (2.4) and is provided with a small chain wheel (2.3), a plurality of driving motor I (2.5) driving components are uniformly arranged in the circumferential direction, the small chain wheel (2.1.3) drives the big chain wheel (2.1.3) to rotate through the chain (2.2); a stone discharge port (2.3.1) is formed in the soil crushing cavity shell (2.3), and a bar screen (2.6) is arranged between the soil crushing cavity (2.4) and the discharge port I (2.7);
the metering and conveying device (3) comprises a gravity sensor (3.2) hung below a discharge port I (2.7) of the soil crushing device, a metering conveying belt (3.1) arranged below the discharge port I (2.7) of the soil crushing device and a driving motor II (3.3) used for driving the metering conveying belt (3.1);
the improved soil stirring device (4) is arranged at the discharging position of the metering conveying belt (3.1), and comprises a power driving device and a feeding port II (4.5), a stirring cavity (4.9) and a discharging port II (4.7), wherein the feeding port II (4.5), the stirring cavity (4.9) and the discharging port II (4.7) are sequentially formed from top to bottom, a stirring shaft (4.9.1) is horizontally arranged in the stirring cavity (4.9), two ends of the stirring shaft (4.9.1) are movably connected with a stirring cavity shell (4.4), one end of the stirring shaft extends out of the stirring cavity (4.9) and is connected with the power driving device, a plurality of stirring arms (4.9.2) are uniformly arranged in the circumferential direction on the stirring shaft (4.9.1), stirring blades (4.9.3) are arranged at the tail end of each stirring arm (4.9.2), a water inlet pipe (4.10) is arranged above the stirring cavity (4.9), and a plurality.
2. A soil mixer for improving the soil quality of a road bed with continuous soil crushing and stirring functions as claimed in claim 1, wherein the number of the arch breaking shafts (2.1.2) is three, the end surfaces of the arch breaking shafts are arranged in an inverted triangle, and a plurality of arch breaking blades (2.1.1) are uniformly arranged on the circumference of each arch breaking shaft (2.1.2).
3. A soil mixer for improving the soil texture with continuous soil crushing and continuous stirring functions as claimed in claim 1, wherein the soil crushing cutter head assembly comprises a toothed drum (2.4.3) sleeved on the soil crushing shaft (2.4.2), a cutter seat (2.4.4) arranged on the toothed drum (2.4.3) and a cutter head (2.4.5) fixed on the cutter seat (2.4.4).
4. A soil mixer for improving road bed with continuous soil crushing and stirring function as claimed in claim 3, wherein the cutter head (2.4.5) is fixed on the cutter holder (2.4.4) by means of a cutter head tail round rod (2.4.5.1), a spring washer (2.4.7) and a nut (2.4.6).
5. A soil mixer for improving road base with continuous soil crushing and stirring function as claimed in claim 3, wherein the axis of the cutter head (2.4.5) passes through the tip and the tangential angle of the circumference of the cutter head when the axis rotates with the tip is α, which is in the range of 45 ° to 60 °.
6. The roadbed improved soil mixer with the continuous soil crushing and continuous stirring functions as claimed in claim 1, wherein the discharge port II (4.7) is arranged diagonally to the feeding port II (4.5), and a discharge door (4.8) is further arranged at the discharge port II (4.7).
7. A soil mixer for improving soil texture with continuous soil crushing and continuous stirring functions as claimed in claim 1, wherein the power driving device comprises a driving motor III (4.3), and the output end of the driving motor III (4.3) is connected with the extending end of the stirring shaft (4.9.1) through a speed changer (4.2).
8. A soil mixer for improving soil subgrade with continuous soil crushing and stirring functions as claimed in claim 7, wherein the number of the stirring shafts (4.9.1) is two, and the stirring shafts are arranged in parallel, and the extending ends of the two stirring shafts (4.9.1) are connected with the speed changer (4.2) through the synchronizing gear (4.3).
9. A soil mixer for improving the subgrade quality with continuous soil crushing and continuous stirring functions as in claim 8, wherein the diameter of the stirring shaft (4.9.1) is D, the diameter of the stirring arm (4.9.2) is D, and the relationship between the two is as follows:
the arrangement of the stirring arms (4.9.2) on the stirring shaft (4.9.1) is as follows: on the same stirring shaft (4.9.1), the stirring arms (4.9.2) oppositely arranged in each group are 180 degrees along the circumferential direction, and the stirring arms (4.9.2) oppositely arranged in the adjacent group and the stirring arms (4.9.2) oppositely arranged in the previous group are 90 degrees and are sequentially arranged; in the same rotating plane of the two stirring shafts (4.9.1), every two groups of stirring arms (4.9.2) which are oppositely arranged form an angle of 90 degrees in the rotating plane; on the same stirring shaft (4.9.1), along the axial direction, the distance between every two adjacent groups of stirring arms (4.9.2) in the installation direction is l, the width of the stirring blade (4.9.3) is B, and the relationship between the two is as follows:
10. the improved soil mixer with continuous soil pulverizing and stirring functions as claimed in claim 9, wherein the mixing arm (4.9.2) is formed with a mixing arm recess (4.9.2.1) at its end, and the mixing blade (4.9.3) is formed with a cut-out surface (4.9.3.1); and has a height h of the stirring blade (4.9.3)1Height h from the stirring arm2The relationship between them is:
h=h1+h2
<mrow> <msub> <mi>h</mi> <mn>1</mn> </msub> <mo>=</mo> <mrow> <mo>(</mo> <mfrac> <mn>2</mn> <mn>3</mn> </mfrac> <mo>~</mo> <mfrac> <mn>3</mn> <mn>4</mn> </mfrac> <mo>)</mo> </mrow> <mrow> <mo>(</mo> <msub> <mi>h</mi> <mn>2</mn> </msub> <mo>-</mo> <mfrac> <mi>D</mi> <mn>2</mn> </mfrac> <mo>)</mo> </mrow> </mrow>
the angle formed by the vertical surface of the stirring arm concave part (4.9.2.1) and the central line of the stirring shaft (4.9.1) is 45 degrees, namely the cut surface (4.9.3.1) of the stirring blade (4.9.3) forms 45 degrees with the central line of the stirring shaft (4.9.1);
the stirring blade (4.9.3) is of a three-claw structure;
the relationship between the width B of the stirring blade and the width B of the cut-away portion is:
the distance s between the stirring arm (4.9.2) and the stirring blade (4.9.3) after assembly is as follows:
CN201711425105.1A 2017-12-25 2017-12-25 Roadbed improved soil stirrer with continuous soil crushing and continuous stirring functions Active CN107964849B (en)

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Publication number Priority date Publication date Assignee Title
CN109201287A (en) * 2018-11-24 2019-01-15 中铁局集团有限公司 A kind of conditioned soil production equipment and method
CN110193302A (en) * 2019-06-10 2019-09-03 山东清洁环保重工科技有限公司 A kind of dedicated mixing station of standard type dirt
CN112746538A (en) * 2020-12-10 2021-05-04 江苏省华厦工程项目管理有限公司 Construction method and equipment for filling mucky soil in creek pond
CN113005864A (en) * 2021-02-24 2021-06-22 北京市政建设集团有限责任公司 High-efficiency environment-friendly multi-mixing-mode solidified soil mobile mixing equipment
CN114232432A (en) * 2021-07-21 2022-03-25 南京富源资源利用有限公司 Curing method of modular efficient curing agent for field mixing
CN116005516A (en) * 2023-01-06 2023-04-25 中铁十九局集团有限公司 Roadbed improved soil processing system with continuous soil crushing and continuous stirring functions

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CN114232432A (en) * 2021-07-21 2022-03-25 南京富源资源利用有限公司 Curing method of modular efficient curing agent for field mixing
CN116005516A (en) * 2023-01-06 2023-04-25 中铁十九局集团有限公司 Roadbed improved soil processing system with continuous soil crushing and continuous stirring functions

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